Bifocal magnifier



FIG. 1 is a top plan view of a bifocal magnifier showing my new design;

FIG. 2 is an enlarged side elevational view thereof;

FIG. 3 is an enlarged left end elevational view thereof;

FIG. 4 is a top perspective view thereof; and,

FIG. 5 is a bottom perspective view thereof. 

The ornamental design for a bifocal magnifier, as shown. 